Core Characteristics & Material Specification
Integrated Rocker Arm Design:
A high-strength, monolithic forged or fabricated steel rocker serves as the central lever and load-bearing pivot point.
01
Central Pivot Assembly:
Features a high-capacity, sealed kingpin or rubber torsion bushing for smooth articulation and long service life.
02
Unified Trailing Arms:
Forged or fabricated from high-tensile steel, these arms directly link the axle to the rocker, providing precise axle alignment.
03
Consolidated Air Spring Mounting:
Utilizes one or two heavy-duty air springs mounted directly atop the rocker assembly, simplifying the air circuit.
04
Robust Mounting Brackets:
Fabricated from high-yield-strength steel plate, designed for direct, welded connection to the trailer main beams.
05
Key Performance Parameters
|
Parameter Item |
Specification |
Unit |
|
Single Axle Rated Load |
10-30 |
T |
|
Vertical Articulation Angle |
±15 |
° |
|
Horizontal Rotation Angle |
360 |
° |
|
Pivot Shaft Diameter |
80-120 |
mm |
|
Shock Absorber Stroke |
150-250 |
mm |
|
Working Temperature Range |
-40 to 120 |
℃ |
|
Corrosion Resistance |
≥1000 Hours (Salt Spray Test) |
- |
|
Installation Time per Axle |
1-2 |
Hours |
Product Advantages
Reduced Weight & Parts Count: Eliminates numerous hangers, equalizers, and bushings, significantly cutting unsprung weight and potential failure points.
Simplified Installation & Maintenance: The single mounting point speeds up assembly, and fewer components mean easier inspection and lower lifetime maintenance costs.
Excellent Independent Axle Articulation: Each axle can move freely over obstacles, improving traction and reducing frame stress compared to tandem walking-beam designs.
Consistent Ride Height: Integrated height control valves maintain a stable deck height regardless of load distribution across the axle group.
Primary Application Scenarios
Dry Van and Refrigerated Trailers seeking maximum cargo weight and reliability.
Flatbed and Drop Deck Trailers operating on semi-improved job sites.
Tanker Trailers (both liquid and dry bulk) where stability and reduced maintenance are critical.
Specialized Haulage for high-value or sensitive cargo requiring a smooth ride.
Manufacturing & Process Technology
The core rocker component is produced via precision CNC machining following forging or laser cutting. All welding is performed robotically under controlled conditions for consistent penetration and strength. The assembly undergoes shot peening to enhance fatigue resistance. A strict quality protocol includes functional cycle testing of the pivot mechanism and pressure testing of the complete air system before shipment.
Services
We provide complete suspension system kits, including all mounting hardware and detailed weld-on templates for precise installation. Our technical support covers ride height adjustment, system troubleshooting, and OEM integration consulting. A full range of wear parts (bushings, pivot pins) is available through our global distribution network.
FAQ
Q: How does single-point suspension improve trailer durability?
A: By allowing axles to articulate independently, it prevents frame twist and reduces stress concentrations that can lead to cracks in traditional suspensions.
Q: Is this system suitable for extremely harsh off-road use?
A: While it offers good articulation, dedicated off-road multi-link suspensions may be preferable for extreme environments. It is ideal for on-highway and semi-improved road conditions.
Q: What happens if the central pivot fails?
A: The system is designed for high reliability. In the unlikely event of a bushing or pin failure, the central design allows for a single, straightforward replacement point, minimizing downtime.
Q: Can it be retrofitted to an existing trailer?
A: Retrofit is possible but requires significant frame modification, including cutting off old hangers and welding new central brackets. A professional assessment is strongly recommended.
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